In his closing argument on Tuesday, Apple lawyer Harold McElhinny told the jury that Samsung had employed a shortcut in its product design.

"In those critical three months, Samsung was able to copy and incorporate the result of Apple's four-year investment in hard work and ingenuity- without taking any of the risks," McElhinny said referring to the time spent working on Samsung phones by a South Korean designer who testified in the trial.

For his part, Samsung's lawyer Charles Verhoeven told the jury a verdict in favour of Apple meant competition would be stifled in the industry.

"Rather than competing in the marketplace, Apple is seeking a competitive edge in the courtroom," Verhoeven said in his closing statement.

"(Apple thinks) it's entitled to having a monopoly on a rounded rectangle with a large screen. It's amazing really."

The closely watched trial has drawn worldwide attention and on Tuesday the courtroom was overflowing with observers, journalists, lawyers and analysts.